add vdioctl

[unix-history] / usr / src / old / whoami / whoami.c

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
All rights reserved.\n";
#endif not lint

#ifndef lint
static char sccsid[] = "@(#)whoami.c    5.1 (Berkeley) %G%";
#endif not lint

#include <pwd.h>
/*
* whoami
*/
struct  passwd *getpwuid();

main()
{
       register struct passwd *pp;

       pp = getpwuid(geteuid());
       if (pp == 0) {
               printf("Intruder alert.\n");
               exit(1);
       }
       printf("%s\n", pp->pw_name);
       exit(0);
}